Type-writing machine.



H. H. STEELE.

TYPE WRITING MACHINE.

APPLICATION FILED 13120.11, 190m Patented J an. 17, 1911-.

3 SHEETSSHEET 1.

| l I-Il lllllllllllll INVENTUR,

WITNE'EIEEE: 57h %2%/ l-IISATTEIRNEY H. H. STEELE.

TYPE WRITING MACHINE.

APPLICATION FILED DEO.11, 1908.

Patented Jan.17, 1911.

3 SHEETSSHBET 2.

INVENTEIR:

W TNESSES:

HIEATTEIRNEY H. HLSTEELE.

TYPE WRITING MACHINE.

APPLIOATION FILED 13110.11, 1908.

981,809. Patented Jan-17,1911;

3 BHEBTBSHEET a.

WITNESEES: NVENTEIR' HISATTBRNE p dTATEd T HERBERT H. STEELE, OF MARCELLUS, NEW YGBK, ASSIGNOR WRITER COMPANYQOF SYRACUSE, NEW YORK A GOREOBATIUN 0h NEW YORK.

TYPE-WRITING nacnmia. I

Patented Jan. i'tf twin.

Application filedDecember '11, 1993. Serial No. 467,058.

T 0 all whom it may concern:

Be it known that I, HERBERT H. STEELE,

citizen of the United States, and resident of. Marcellus, in the county of Onondaga and.

been given a uniform extent of rotation at eachintermittent feed movement of the car- 'riagex In such constructions when a ribbon spool is being wound onto an empty or nearly empty spool, the longitudinal feed of the ribbon is comparatively slow andas the. amount of ribbon wound on the spool inereases the velocity of the ribbon through the printing field gradually increases invproportion to the increasing diameter ot the winding on the core. regular longitudinal feed ot the ribbon past This causes an irtlie printing field; a feed that is comparatively slow or short at the start and gradually increases as the opposite end ot the ribbon is approached.

0nc ot' the objeetsof the present invention is to overcome the above difficulties and to provide improved means whereby the velocity and extent ofrotation of the winding spool varies progressively according to the amount of ribbon wound on said spool for efi'ecting a uniform travel of the ribbon past the printing field.v

A further object of the invention is to prevent any excessive drag upon the spool from which the ribbon is being wound as the winding spool'takes up the ribbon.

A still further object of the invention is to" provide an. improved ribbon reversing mechanism.

To the above andother ends which will hereinafter appear. my invention consists in the features of construction, arrange ment of parts and combinations of devices to be hereinafter described and claimed.

In the accompanying drawings 111 which like reference characters designate corresponding parts in the various views, Figure 1 1s a fragmentary vertical fore and aft seetional view of the upper portion of one form of typewriting machine embodying my in vention. Fig. 2 is a detail sectional view showing the disposition of the reveising deflvice at-gthe opposite side of the machine when that shown in Fig. l is positioned as indicated therein. Fig. 3 is a fragmentary front view with parts broken away and parts in section, and showing a portion of the ribbon feed and reversing mechanism. Fig. at is a fragmentary plan view of the same partly in section.

My presentinvention is in the nature of an improvement on the construction described in my application filed December 5th, 1908, Serial No. etGGJQl.

l have shown my invention embodied in a Monarchv machine, although it should be understood that the invention is applicable to ditterent styles of typewriting machines.

Corner posts 1 support a top plate 2 on which asuitable carriage (not shown) is mounted to travel from side to side of the machine. the carriage supporting a cylindrical platen 3. Type bars of the usual form are adapted to strike upwardly and rearwardly' through an opening 4 in the top plateagainst the front face of the platen 3,

TO THE MUNAECH TYPE- a ribbon Abeing automatically interposed in the path of the type by the usual mechanism for actuating a ribbon vibrator 5;

The ribbon A passes through guide openin s in the ribbon vibrator from one s 001 to P 6 to the opposite ribbon spopl 7. The rib A beveled pinion 18 is secured to the righthand end of the shaft, 15 and a like beveled pinion 19 is secured to the left-hand end of the shaft. The hub of the pinion 18 bears against the depending lug 16 on one side v thereof, whereas the hub of the beveled gear 7 clearly appear.

14 bears on the opposite side ofthe depending lug 17, thus preventing a longitudinal movement of the shaft in its bearings. The left-hand beveled pinion l9 meshes with. a beveled gear 20 secured to a shaft 21 journaled at its rear end portion in a depending lug 22 projecting from the top plate of the machine. The forward end of the shaft 21 is journaled in a depending projection 23 extending from the top' plate. 24 surrounds the shaft 21 and is connected therewith by a spline 25 which takes within a spline groove in the member 24 and causes said member to rotate with the shaft 21 but enables the member to be moved longitudinally of the shaft independently thereof. The member 24 has a friction roller 26 secured thereto for cooperation with a companion friction disk 27, the roller 26 and disk 27 constituting two members of differential gearing as will hereinafter more A circular groove 28 is formed in the member 24 for the reception of inwardly projecting pins 29 carried by a yoke 30. The yoke is carried by an arm 31 supported and controlled in a manner which will be hereinafter described. The friction disk 27 is fixedly mounted on a shaft 32 which at one end is received in a bearing opening inthe depending projection 23 and at its other end projects through a bearing opening in a depending bracket arm 33 secured to the top plate by a screw 34. The friction disk has fixed thereto a beveled pinion 35 which meshes with a companion beveled pinion 36 secured to the lower end of an upright shaft 37 which extends throu h a bearing opening in the project-ion 23 and extends above the top plate and carries at its upper end the left-hand ribbon spool 6. An upright shaft 38 is supported in a bearing 39 on the top plate and carries the arm 31 at the lower end thereof. The shaft 38 extends through an opening in the top plate into an enlarged portion 40 of the cup 8 of the left-hand ribbon spool. The shaft 38 has an arm 41 secured to the upper end portion thereof, the arm being situated at a height where it is adapted to swing into the space bet-ween the flanges of the ribbon s 001. The free end of the arm 41 is provi ed with 'a yoke-42 which receives a contact device or roller 43 journaled in the yoke at 44. This roller is adapted to bear upon the coil of ribbon on the lefthand ribbon spool, as shown in Fi 4. An arm 45 is connected to the collar ofthe arm 41 and extends through an opening 46 in the of the ribbon spool so that the latter may A member.

the shaft 21 and bears on one end against a sleeve 49 that is secured by a screw -50 to the shaft 21 and, at its opposite end the spring bears against the member 24 so as to tend to force it and the friction wheel 26 toward the axis of the friction disk.

From the foregoing description it will be understood that the intermediate connections between the roller 43 and the member 24 automatically varies the position of the friction roller 26 with reference to its companion friction disk 27, according to, the amount of the ribbon on the winding spool. Thus as the coil of ribbon on the winding spool increases the roller 43 will be forced toward the dotted line position and the friction roller 26 will through the shaft 38 and arm 31, be gradually moved away from the axis of the friction disk toward the periphery thereof and a variation in the speed and extent of movement of the ribbon spool will be effected, depending on the amount of ribbon wound on the winding spool. There is therefore an automatic compensation in the feed for the increased amount of ribbon wound on the winding spool and the ribbon will be fed. past the printing field a uniform distance at each intermittent feed movement of the carriage irrespective of the amount of ribbon wound on the winding spool.

I have described the connections between the shaft 15 and the left-hand ribbon spool 6. It should be understood that like connections are employed between the righthand ribbon spool 7 and the shaft 15, and further detailed description of the duplicated parts at the other side of the machine is therefore deemed unnecessary. The corresponding parts at the other side of the machine will be indicated by the same reference numerals employed to designate the connections already described,

Each shaft 32 which carries a friction disk 27, extends beyond its supporting bracket 33 and a leaf spring or reversing device 51 bears against the projecting conical end of the shaft so as toforce the friction disk'into contact with its companion friction wheel 26 and maintain an effective engagement between the companion beveled gears 35 and 36. Each leaf spring 51 is in the nature of a 7 and is pivoted centrally on a shouldered. screw 57 secured to the front plate 58 of the machine. Depending ears 5%) are formed on the segmental reversing device by which forwardly projecting finger pieces 60 are secured to the device; the finger pieces extending through slots 61 in the front plate 58. By swinging the reversing device 56 around its pivot by means of either of the finger pieces 60 the positions of the leaf springs 51 are varied to bring the closed portion 62 of one of them into contact with the end of the shaft 32 and to bring theopening 53 in the other spring into register with the associated shaft. When the portion 62 engages the end of the associated shaftthe spring exerts a longitudinal pressure on the shaft to maintain a frictional engagement between the associated disk 27 and its cooperating friction wheel 26, thus operatively connecting these parts to effect a rotation of the friction disk through the intermediate gearing between the spring drum and said disk. and to turn, say, the left-hand ribbon spool through the intermediate gearing between the friction disk and said spool. On the other hand, the opening 53 in the other leaf spring 51 is at this time in register with its shaft 32 and the pressure of the spring is released from the associated shaft and there is no pressure to maintain a frictional connection between the right-hand friction disk 27 and its companion friction wheel 26. so that the spool 7, its shaft 37 and the friction disk (if the bev eled pinion 35 of the latter is in mesh with the pinion 3(5) will be rotated independently of its shaft 21 and other associated parts of the train when the ribbon is being wound on the ribbon spool 6. It should be understood that the conoidal ends of the shafts 32 act as cams to flex the springs 51 when the latter are moved to bring the closed portions 62 of the springs against the ends of the shafts.

From a comparison of Figs. 1 and 2 it will be understood thatwhen one leaf spring or reversing device 51 engages its shaft to operatively connect the companion friction disk and wheel of one ribbon spool, the leaf spring 51 at the other side of the machine will have the opening therein in register with its shaft so as to relieve the companion friction gears from pressure, and thus render them inoperative.

From the foregoing description itwill be understood that the ribbon mechanism driven from the spring drum which is situated in the rear of the machine: that. the shaft 15 is a main driving shaft which is at all times maintained in mesh with the gears of the secondary driving shafts 21; that these secondary driving shafts are operatively connected to the ribbon spools through differential gearing and that in order to eflect a reversal in the direction of the feed. the connections between the secondary driving shafts and the ribbon spools are rendered operative or inoperative in accordance with the spool to be driven. It will likewise be understood that when one spool is being driven there is no essential drag on the spool from which the ribbon is being unwound, and that the connection and disconnection between the ribbon spools and the driving mechanism is effected between the secondary driving shafts and the spools and near the ribbon spools and at or near the front of the machine. The ribbon mechanism of my presentinvention is particularly well adapted to feeding an ink ribbon of paper having the ink, carbon, or pigment on the side next to the platen and being uninked or plain on the opposite side thereof.

Certain of the features herein shown and described are claimed broadly in my application hereinbefore referred to, the present invention being restricted to features not disclosed in my said prior application.

By differential gearing, I mean gearing in which the speed ratio can be changed. As shown in the present case, this is done by moving the wheel 26 toward or from the axis of the disk .27.

\Vhat I claim as new and desire to secure by Letters Patent. is

1. In a typewriting machine, the combination with a pair of ribbon spools, driving means for said spools, said driving. means including differential gearing for each spool and automatic means for changing said gearing to change the feed of the driven spool in accordance with the amount of ribbon wound thereon; and means for effecting an operative disconnection between the members of the differential gearing of one spool and for concurrently efl'ecting an operative engagementbetween the members of the differential gearing of the other spool.

In a typewriting machine. the combination of a ribbon spool; driving mechanism therefor, said driving mechanism including differential gearing. means controlled by the amount of ribbon on the spool for determining the relation betw-een the members of said differential gearing: and hand-actuated means operable at will for throwing the members of said differential gearing into and out of cooperative relation.

3. In a typewriting machine. the combination of ribbon spools; means for rotating said ribbon spools; means for varying the extent of feed imparted to the driven spool during the different intermittent rotations of the spools in accordance. with the amount concurrently throwing the members of the varying means of the other ribbon spool into cooperation.

4c. In a typewriting machine, the combination of ribbon spools; driving mechanism therefor, said driving mechanism including differential gearing associated with each ribbon spool; means, including a contact device which bears on the ribbon on each spool, for automatically varying the relation between the members of the differential gearing as the ribbon is wound on the winding spool; and hand-actuated means operable at will for throwing the members of the differ ential gearing of one spool out of cooperation and for concurrently throwing the members of the differential gearing of the other spool into cooperation.

In a typewriting machine, the combination of a ribbon spool; means controlled by the feed movement of the carriage for turning the ribbon spool, said means including differential gearing; automatically actuated means for changing said differential gearing to vary the feed of the driven spool; and hand-actuated means operable at will for throwing the members of said differential gearing into and out of cooperativerelat-ion.

6. In a typewriting machine, the combination of ribbon spools; means controlled by the feed movement of the carriage for turn ing the ribbon spools, said means including differential gearing associated with each ribbon spool; automatically actuated. means for changing said differential gearing to vary the feed of the driven spool, said automatically actuated means including a contact device which bears on the surface of the ribbon of each of the spools and whose position is altered in accordance with the amount of ribbon on the associated ribbon spool; and hand-actuated means operable at will for throwing the differential gearing of one of said ribbon spools out of cooperative relation and for concurrently throwing the differential gearing of the other of saidfribbon spools into cooperative relation.

7. In a typewriting machine, the combination of ribbon spools; means for intermittently rotating said ribbon spools; means, which include a contact device that bears on each of the ribbon spools and differential driving means controlled by said contact device for varying the extent of feed of the winding spool during the different intermittent rotations of the spools in accordance with the amount of ribbon wound on the winding spool, the ribbon as it is wound out of cooperation and for concurrently throwing the members of the differential driving means of the other ribbon spool into cooperation in order to effect a change in the direction of feed of the ribbon.

8. In a typewriting machine, the combination of a ribbon spool; driving mechanism therefor, said driving mechanism including a driving disk and a cooperative driving wheel; automatically actuated means for effecting a relative movement between the wheel and disk toward and from the axis of the disk to vary the feed of the ribbon spool; and hand-actuated means operable at will for throwing the disk and wheel into and out of cooperative relation.

9. In a typewriting machine, the combination of a ribbon spool; driving mechanism therefor, said driving mechanism including a driving disk and a cooperative driving wheel; means for effecting a relative'movement between'the wheel and disk toward and from the axis of the disk to vary the feed of the ribbon spool, said last mentioned means including a contact device that bears on ,the spool; and hand-actuated means operable at ,will for throwing'said disk and tuated means for moving said contact de-i vices away from the ribbon; and hand-actuated means operable at will for throwing the driving disk and Wheel of one ribbon spool out of cooperation and for throwing the driving disk and wheel of the other ribbon spool into cooperation.

11. In a' typewriting machine, the combination of a ribbon spool; driving means for said'spool, said driving means including differential feed devices; a swinging device contacting with the ribbon on the spool; intermediate connections between the swinging device and one of the differential feed, devices to automatically effect achange. in the'extent of feed movement of the spool effected by the drivin means; and handactuated means operab e at will for throwing said differential feed devices into and out of cooperative relation.

12. In a typewriting machine, the combination of ribbon spools; driving meansfor said spools, said driving means including differential feed devices associated with each ribbon spool; a swinging device contacting with the ribbon on each spool; intermediate connections between each swinging device tuated means operable at will for throwing the differential feed devices of one spool into cooperation and for throwing the differential'feed devices of the other spool out of cooperation in order to effect a reverse in the direction of the feed of the ribbon.

13. In a typ-ewriting machine, the combination of a spring drum for the carriage; a ribbon spool; intermediate driving mechanism between the spring drum and ribbon spool, said driving mechanism including differential feed devices; a movable device contacting with the ribbon on the spool; in termediate connections between said movable device and one of said differential devices, to automatically change the extent of feed effected by the driving means; and hand-actuated means operable at will for throwing the differential feed devices into and out of cooperative relation.

14. In a typewriting machine, the combination of a power driven earriage;a ribbon spool; a rotating device for turning said spool; a cooperating actuating device operated by the power employed to move the carriage; automatically actuated means for varying the distance from the center of rotation of said rotating device at which it co operates with said cooperating actuating device; and hand actuated means operable at will for throwing said rotary device and its cooperating actuating device into and out of cooperative relation.

15. In a ribbon mechanism for typewriting machines, the combination of a ribbon spool; two cooperating rotary actuating devices for rotating said spool; means operating automatically to vary the distance from the center of rotation of one of said devices at which it. cotipe'atively engages with the other of said devices; and means operable at will for throwing said rotary actuating device into and out of cooperative relation. 16. In a typewriting machine, the combination of ribbon spools, differential gearing for each of said spools, and means for throwing the members of the differential gearing for one spool into cooperation and for concurrently throwing the members of the differential gearing for the other spool out of cooperation.

17. In a typewriting machine, the combination of a spring drum for the carriage, ribbon spools, intermediate operative con nections between the spring drum and ribbon spools, said connections including differ ential actuating devices for each spool, and

reversing means for operatively connecting the differential actuating devices of one spool and for concurrently disconnecting the differential actuating devices of the other spool.

18. In a typewriting machine, the combi nation of ribbon spools, driving means therefor including a friction disk and a cooperative wheel for each spool, means for varying the relation between each disk and wheel, and reversing means for throwing the friction disk and wheel of one spool into cooperation and for concurrently throwing the wheel and friction disk of the other spool out of cooperation.

19. In a typewriting machine, the combi nation of a spring drum for the carriage, ribbon spools, intermediate gearing between said spring drum and said ribbon spools, said intermediate gearing including a friction disk and wheel for each spool, means for automatically varying the relation between each disk and its cooperative wheel, and hand controlled reversing means operable at will for throwing the wheel and disk for one spool into cooperative relation and for concurrently throwing the wheel and disk of the other spool out of cooperative relation.

20. In a typewriting machine, the combination of ribbon spools, a spring drum for th e carriage, a main driving shaft turned by the drum, secondary driving shafts, one for each ribbon spool, constantly maintained geared connections between said main and secondary driving shafts, differential gearing between said secondary driving shafts and the ribbon spools, and reversin it means for throwing the members of the di' erential gearing for one ribbon spool out of cooperation and for concurrently throwing the members of the differential gearing for the other ribbon spool into cooperation. 21. In a typewriting machine, the combination of ribbon spools, a spring drum for the carriage, a main driving shaft turned by the drum, secondary driving shafts, one for each ribbon spool, constantly maintained geared connections between said main and secondary driving shafts, a friction wheel and disk between each secondary driving shaft and the companion ribbon spool, means for automatically varying the relation between the. wheel and disk of each spool, and reversing means for throwing the friction wheel and disk for one spool out of cooper tion and for concurrently throwing the friction wheel and disk of the other spool into cooperation.

In a typewriting machine, the combination of ribbon spools, driving means for said spools, said driving means including cooperative frictional driving devices for each ribbon spool, and spring-pressed means for maintaining cooperative relation bematically actuated means for varying the relation between each friction disk and wheel, and reversing meansv for applying said spring-pressed means to the friction disk and wheel of one spool and for-concurrently relieving the pressure of said spring-pressed means onthe friction disk and wheel of the other spool. v

24. In a typewriting machine, the combination of ribbon spools, driving means for said spools, said driving means including a cooperative friction disk and wheel for each ribbon spool, a spring adapted to bear against the shaft of each disk to press the shaft endwise and thus maintain an operative engagement between that disk and its wheel and reversing means for concurrently releasing the pressure of one spring and for applying the pressure of the other spring to render the driving means inoperative on one spool and operative on the other.

In a typewriting machine, the combination of ribbon spools, gearing for said ribbon spools, shafts for said gearing, and means for reversing the direction of feed of the ribbon, said means comprising springs adapted to bear on certain of said shafts to maintain an operative engagement between certain of the gears, and hand-actuated means for concurrently moving one of said springs into cooperative relation with its shaft and the other spring out of cooperative relation with its shaft.

26. In a typewriting machine, the combination of ribbon spools, gearing for said ribbon spools, shafts for said gearing, and means for reversing the direction of feed of the ribbon, said means comprising springs adapted to bear endwise on certain of said shafts to move the shafts longitudinally and to maintain an operative engagement between certain of the gears, and hand-actuated means for concurrently moving one of said springs into cooperative relation with its shaft and flexing the spring, and moving the other spring out of contact with its shaft.

21in a typewriting machine, the combination of ribbon spools, gearing for driv ing said spools, shafts for said gearing, and reversing mechanism for changing the direction of the feed of the ribbon, said reversing mechanism comprising two lea-f springs, each adapted to exert a force endwise on a shaft for one of saidribbon spools and to maintain an operative engagement between certain ofthe gears of the companion ribbon spool, and hand-actuated shiftable means for, concurrently throwing one of said springs out of operation on its cooperating shaft when the other spring is moved into position to bear on the. shaft with which it cooperates.

28. In a typewriting machine, the combination of ribbon spools, driving means -therefor including aset offrietion gears for each spool, and reversing means cooperative with ,tlieff'rict ion gears to render them operative or inoperative, said reversing means comprising two springs, one for each set of friction gears, said springs mamtaining an operative engagement between the friction gears of each set, and means for concurrently renderingone spring operative when the otheris rendered inoperative.

29. In a typewriting machine, the combination of ribbon spools, driving means therefor including a set of friction gears for each spool, shafts for said friction gears, and reversing means cooperative with one of the shafts of.each set of friction gears to render the friction gears ope -ative or, inoperative, said reversing means comprising two pivot-ed springs, one for each set of friC- tion gears, saids )rings each being coiiperative with ,oneof the shafts of the companion set of friction gears to maintain an operative engagement between the members thereof, and hand-actuated means formoving one of said. springs around its pivot into cooperation with its companion shaft when the other spring is turned around its pivot to move it out of cooperative relation with its shaft.

day. of December A. DQ 1908.

HERBERT H. STEELE.

'itnesses: I p

Bnssna G. Ko'rnLL, Manna K. UNDRRDOWN.

Signed at Syracuse, 'in the county of Onondaga, and State of New York this 9th 

